/**
 * This file is part of 1genia trampoline
 * Copyright (C) 2007 - 2008 1genia (contact@1genia.com)
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; version 3 of the License. 
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details. 
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; see the file COPYING.TXT.  If not,
 * write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA 02110-1301, USA. 
 **/
package com.genia.toolbox.web.portlet.util;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import org.springframework.util.StringUtils;

/**
 * static class to help trim spaces.
 */
public class TrimUtils
{

  /**
   * constructor.
   */
  private TrimUtils()
  {
    // Nothing to do.
  }



  /**
   * helper methods that trim whitespace on the elements of a {@link Map}.
   * 
   * @param map
   *          the map to trim
   * @return a map with all elements trimmed
   */
  public static Map<String, String> trimMap(Map<String, String> map)
  {
    if (map == null) {
      return map;
    }
    Map<String, String> res = new HashMap<String, String>();
    for (Entry<String, String> entry : map.entrySet()) {
      res.put(StringUtils.trimWhitespace(entry.getKey()), StringUtils.trimWhitespace(entry.getValue()));
    }
    return res;
  }
}
